XML 151 R96.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Allowance for Loan Losses - Recorded Investments in Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Individually evaluated for impairment | $ 35,278 | $ 30,307
Collectively evaluated for impairment | 8,825,597 | 7,362,755
Loans, net of unearned income | 9,083,129 | 7,620,322
Receivables Acquired with Deteriorated Credit Quality |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Acquired with deteriorated credit quality | 222,254 | 227,260
Commercial, financial, agricultural |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Individually evaluated for impairment | 2,445 | 3,064
Collectively evaluated for impairment | 1,264,324 | 1,021,014
Loans, net of unearned income | 1,295,912 | 1,039,393
Commercial, financial, agricultural | Receivables Acquired with Deteriorated Credit Quality |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Acquired with deteriorated credit quality | 29,143 | 15,315
Real estate – construction |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Individually evaluated for impairment | 10,043 | 1,777
Collectively evaluated for impairment | 730,625 | 631,612
Loans, net of unearned income | 740,668 | 633,389
Real estate – construction | Receivables Acquired with Deteriorated Credit Quality |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Acquired with deteriorated credit quality | 0 | 0
Real estate – 1-4 family mortgage |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Individually evaluated for impairment | 14,238 | 14,482
Collectively evaluated for impairment | 2,732,862 | 2,275,270
Loans, net of unearned income | 2,795,343 | 2,343,721
Real estate – 1-4 family mortgage | Receivables Acquired with Deteriorated Credit Quality |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Acquired with deteriorated credit quality | 48,243 | 53,969
Real estate – commercial mortgage |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Individually evaluated for impairment | 8,059 | 10,545
Collectively evaluated for impairment | 3,903,012 | 3,260,648
Loans, net of unearned income | 4,051,509 | 3,427,530
Real estate – commercial mortgage | Receivables Acquired with Deteriorated Credit Quality |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Acquired with deteriorated credit quality | 140,438 | 156,337
Installment loans to individuals |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Individually evaluated for impairment | 493 | 439
Collectively evaluated for impairment | 194,774 | 174,211
Loans, net of unearned income | 199,697 | 176,289
Installment loans to individuals | Receivables Acquired with Deteriorated Credit Quality |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Acquired with deteriorated credit quality | $ 4,430 | $ 1,639

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rnst_RealEstateOneToFourFamilyMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rnst_CommercialResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rnst_InstallmentLoansToIndividualsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |